Adjustable chair
US5320412A · kind A · utility
23Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1991 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | Nov 5, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G2203/74
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present assembly relates to a wheel chair having a base frame, a seat frame and a back frame, and a control device for rotating the back frame relative to the seat frame. The back frame includes a back support to receive a trunk portion of a user, the back support being displaceable by another control device relative to the back frame. A control unit communicates with the control devices for rotating and for displacing, the control unit being adjustable to vary the displacement of the back support according to the rotation of the back frame to minimize shear forces between the user's trunk and the back support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.